Before I and the army of new Succubi walked away from the mansion, I gave it a good look and used <Sonic Sword> to cut it in half, leaving them in rubble and creating a small earthquake.
That made the quiet Duchy alive as I heard the citizens scream that monsters had come and were searching for their children.
While I didn't expect them to be scared by a small earthquake, this worked better for me as I could sneak these Succubi into the church without meeting anyone else.
Explaining what happened to them would be a chore I wanted to avoid.
I destroyed the mansion because I was too lazy to find the revival chamber inside. If the chamber was destroyed, the dead soul would automatically be sent to the nearest one, which was the church.